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postgraduate-prep
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subjects
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major
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图论常见算法.md
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图论常见算法
Dijkstra算法
用于求解单个源最短路问题:
初始化
:
将所有顶点的距离设为正无穷
,
源顶点设为0
;
迭代:从源顶点出发,遍历所有边,更新顶点的距离;
检验:检查是否存在负权重环,如果有则返回错误;
返回:返回所有顶点的距离。
Bellman-Ford算法
Bellman-Ford算法